用VB程序首先检查光驱是否准备好或光驱中是否为VCD光碟，然后利用VB模拟XingMPEG的键盘动作，通过短短的几行程序，实现VCD光盘的自动播放。-CD-ROM drive with a VB program first checks whether the drive is ready for the VCD or CD, then use the VB simulations XingMPEG keyboard action, by just a few lines of code to

SweepGen turns a PC into an Audio Oscillator and Sweep Generator which can be used for testing audio or educational purposes. In conjunction with audio test instruments, you can make frequency response plots. SweepGen uses the sound card in your PC t

电子爱好者们经常希望测试自己的音频设备如声卡、碟机、功放、音箱等的性能指标，却苦于没有价格高昂的专业测试设备而无从下手，设计制作时也无法进行必要的测试指导。有些CD碟提供了测试信号，如著名的“雨果发烧碟（一）”、“My Disk”等，《无线电》也曾推出音频测试CD。但CD信号的精度有限，而且没有操作系统的配合，测量、记录和分析都很不方便。-Electronic fans often want to test their audio devices such as sound cards, CD,